profile_distance()

float MayaFlux::Kinesis::profile_distance ( const TurningProfile &  a, const TurningProfile &  b  )

inlinenoexcept

Root mean square difference between two turning profiles.

Parameters

a	Left profile
b	Right profile, same sample count as a

Returns

RMS angular difference in radians, or infinity if the sample counts differ

In radians, so the result is directly interpretable: a value near zero is the same shape, a value near pi is a shape bending the opposite way at every point. Profiles of different lengths are not comparable and return infinity rather than silently truncating, since a partial comparison of two shapes is not a weaker answer but a wrong one.

Definition at line 249 of file PathShape.hpp.

{
    if (a.turning.size() != b.turning.size() || a.turning.empty())
        return std::numeric_limits<float>::infinity();
 
    float acc = 0.0F;
    for (size_t i = 0; i < a.turning.size(); ++i) {
        const float d = a.turning[i] - b.turning[i];
        acc += d * d;
    }
    return std::sqrt(acc / static_cast<float>(a.turning.size()));
}

References a, and b.